Keyboard assembly



FIG. 1 is a perspective view of our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

Broken lines shown in the drawings illustrate portions of the keyboardassembly, and form no part of the claimed design.

The ornamental design for a keyboard assembly, as shown and described.